A national anthem is a patriotic musical composition symbolizing and evoking eulogies of the history and traditions of a country or nation. The majority of national anthems are marches or hymns in style. American, Central Asian, and European nations tend towards more ornate and operatic pieces, while those in the Middle East, Oceania, Africa, and the Caribbean use a more simplistic fanfare. Some countries that are devolved into multiple constituent states have their own official musical compositions for them (such as with the United Kingdom, Russia, and the former Soviet Union); their constituencies' songs are sometimes referred to as national anthems even though they are not sovereign states.
In the early modern period, some European monarchies adopted royal anthems. Some of these anthems have survived into current use. "God Save the King/Queen", first performed in 1619, remains the royal anthem of the United Kingdom and the Commonwealth realms. La Marcha Real, adopted as the royal anthem of the Spanish monarchy in 1770, was adopted as the national anthem of Spain in 1939. Denmark retains its royal anthem, Kong Christian stod ved højen mast (1780) alongside its national anthem (Der er et yndigt land, adopted 1835). In 1802, Gia Long commissioned a royal anthem in the European fashion for the Kingdom of Vietnam.
Following the reinstating of La Marseillaise in 1830, in the wake of the July Revolution, as the national anthem of France, it became common for newly formed nations to define national anthems, notably as a result of the Latin American wars of independence, for Argentina (1813), Peru (1821), Brazil (1831) but also Belgium (1830). Consequently adoption of national anthems prior to the 1930s was mostly by newly formed or newly independent states, such as the First Portuguese Republic (A Portuguesa, 1911), the Kingdom of Greece ("Hymn to Liberty", 1865), the First Philippine Republic (Marcha Nacional Filipina, 1898), Lithuania (Tautiška giesmė, 1919), Weimar Germany (Deutschlandlied, 1922), Republic of Ireland (Amhrán na bhFiann, 1926) and Greater Lebanon ("Lebanese National Anthem", 1927).